<template>
  <el-form
    class="login-form"
    :model="loginForm"
    :rules="loginFormRules"
    ref="loginFormRef"
  >
    <!-- 用户名 -->
    <el-form-item prop="username">
      <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username" />
    </el-form-item>

    <!-- 密码 -->
    <el-form-item prop="password">
      <el-input
        prefix-icon="iconfont icon-3702mima"
        v-model="loginForm.password"
        type="password"
      />
    </el-form-item>

    <!-- 按钮区域 -->
    <el-form-item class="btns">
      <el-button type="primary" @click="login">登录</el-button>
      <el-button type="info" @click="resetLoginForm">重置</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { requestLogin } from 'network/login.js'
export default {
  name: 'LoginForm',
  data() {
    return {
      // 登录表单的数据绑定对象
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      // 表单验证规则对象
      loginFormRules: {
        // 验证用户名
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 - 10 个字符', trigger: 'blur' },
        ],
        // 验证密码
        password: [
          { required: true, message: '请输入登录密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 - 15 个字符', trigger: 'blur' },
        ],
      },
    }
  },
  methods: {
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    login() {
      // 新知识点 async 和 await
      this.$refs.loginFormRef.validate(async (valid) => {
        if (!valid) return
        const res = await requestLogin(this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登陆失败')
        this.$message.success('登陆成功')
        // console.log(res)
        // 1.登录成功后将token保存到sessionStorage
        window.sessionStorage.setItem('token', res.data.token)
        // 2.并且跳转至后台界面
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style lang="less" scoped>
.login-form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
  .btns {
    display: flex;
    justify-content: flex-end;
  }
}
</style>>
